Roy, C. (2014). Generating middle range theory: From evidence to practice. Springer Publishing Company.
Chicago-referens (17:e uppl.)Roy, Callista. Generating Middle Range Theory: From Evidence to Practice. New York: Springer Publishing Company, 2014.
MLA-referens (9:e uppl.)Roy, Callista. Generating Middle Range Theory: From Evidence to Practice. Springer Publishing Company, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.